function changeInfo(url){
    switch(url){
        case '/list':
            return `
            <html>
            <h2>我是list</h2>
            </html>
            `
            break;
        case "/home":
            return `
            <html>
            <h2>我是home</h2>
            </html>
            `
        default :
            return `
            <html>
            <h2>我是其他</h2>
            </html>
            `
    }
}
exports.changeInfo = changeInfo